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Page 16 of 35

Issue A

TYPICAL APPLICATIONS

Figure 1. AM/FM Radio Broadcast Synthesizer

SW2

SW1

φV

φR

PDout

MC

fin

ENB

DATA

CLK

REFout

VSS

VDD

LD

RA0

RA1

RA2

OSCin

OSCout

NOTES 1

AND 2

OPTIONAL

LOOP

ERROR SIGNAL

ML12019

VCO

AM B +

+ 12 V

FM B +

+ 12 V

LOCK DETECT SIGNAL

TO DISPLAY DRIVER (e.g., MC14489)

CMOS MPU/MCU

KEY–

BOARD

+ V

3.2 MHz

ML145156

1/2 MC1458

NOTE 3

+

–

NOTES:

1. For AM: channel spacing = 5 kHz,

2. For FM: channel spacing = 25 kHz,

3. The φR and φV outputs are fed to an external combiner/loop filter.See the Phase–Locked Loop – Low–Pass Filter Design page

for additional information. The φR and φV outputs swing rail–to–rail. Therefore, the user should be careful not to exceed the

common mode input range of the op amp used in the combiner/loop filter.

Figure 2. Avionics Navigation or Communication Synthesizer

NAV = 01

COM = 10

CHANNEL

SELECTION

VCO

LOCK DETECT SIGNAL

TO DISPLAY DRIVER

(e.g., MC14489)

CMOS MPU/MCU

+ V

3.2 MHz (NOTE 3)

ML145156

MC33171

NOTE 5

SW2

SW1

φV

φR

PDout

MC

fin

ENB

DATA

CLK

REFout

VSS

VDD

LD

RA0

RA1

RA2

OSCin OSCout

ML12016 (NOTES 2 AND 4)

+

–

VCO RANGE

NAV: 97.300 – 107.250 MHz

COM–T: 118.000 – 135.975 MHz

COM–R: 139.400 – 157.375 MHz

R/T

NOTES:

2. A

3. A 6.4 MHz oscillator crystal can be used by selecting

4. ML12013 + MC10131 combination may also be used to form the

5. The φR and φV outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop – Low–Pass Filter Design

page for additional information. The φR and φV outputs swing rail–to–rail.Therefore, the user should be careful not to exceed

the common mode input range of the op amp used in the combiner/loop filter.

ML145156 Data Sheet Continued on Page 23

LANSDALE Semiconductor, Inc.

ML145156

ML145156